Measurement E151M476

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_UL
ε_L:	0.4706
Q²:	0.0707 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9671

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.35	78.0	0.6979	0.5754
0.45	78.0	0.0887	0.4178
0.55	78.0	0.2298	0.4098
0.55	90.0	-0.5151	0.3269
0.55	270.0	0.5979	0.4714
0.55	282.0	1.0658	0.516
0.65	78.0	-0.1668	0.4937
0.65	90.0	0.4537	0.4559
0.65	258.0	-0.3587	0.3437
0.65	270.0	-0.1001	0.313
0.65	282.0	0.5182	0.4713
0.75	90.0	0.0733	0.5457
0.75	102.0	-0.1212	0.5551
0.75	114.0	0.412	0.5539
0.75	126.0	0.0284	0.5915
0.75	246.0	-0.1662	0.4485
0.75	258.0	-0.402	0.301
0.75	270.0	-0.4713	0.2769
0.85	102.0	-0.4806	0.4333
0.85	114.0	0.7177	0.3887
0.85	126.0	0.2477	0.3468
0.85	138.0	0.413	0.3362
0.85	150.0	0.1954	0.4193
0.85	162.0	0.4666	0.4652
0.85	174.0	0.854	0.5249
0.85	210.0	-0.5073	0.4448
0.85	222.0	0.4084	0.5763
0.85	246.0	0.4051	0.4201
0.85	258.0	0.0074	0.3569
0.85	270.0	0.0277	0.5098
0.95	114.0	0.0579	0.4609
0.95	126.0	0.0836	0.3692
0.95	138.0	-0.0536	0.3965
0.95	150.0	0.2088	0.3343
0.95	162.0	-0.1517	0.3155
0.95	174.0	0.0026	0.4242
0.95	186.0	0.3734	0.4012
0.95	198.0	0.0386	0.4219
0.95	210.0	0.2432	0.4992
0.95	234.0	-0.6614	0.3836

CLAS Physics Database